More than just technicolor, this stuff is atomic. It's so exuberant and fresh, I can barely contain myself!
While I haven't managed to sell this photo styling to a client so far, I think it has a variety of uses. Such brilliantly color photos can show energy, drama, sophistication, a science/tech-y feel, or even if used with a lot of white, a corporate feel. Not to mention the techniques and manipulation behind achieving such intense color requires an expert hand in Photoshop.
Cooler still, the above portraits are snapped with a specially-built 1970s Polaroid aura camera, as an attempt to record what a psychic might see. Yep, these came from a Polaroid. Still skeptical? There's a ton more images, rationale, and information on The Portrait Machine Project site.